Locking-block.



W. W. SHORDAY.-

LOCKING BLOCK APPLICATION FILED J'UNEZL'IBIQ.

Patented S gpt. 30,1919;

)1 TTORNE WALTER w. SHORDAY, or nearer rrrrrlennnrirrs, PENNSYL ANIA, ASSIGNOR or ONE-nan 'ro nowazan it. man, or rnrnannnrnm, PENNSYLVANIA.

BOOKING-BLOCK.

Specification of Letters Patent.

Application filed June 25, 193.9.' Serial No. 30$,M1.

To all whom it may concern:

Be it known that I, WALTER N. SHoRoAY, a citizen of the United States, residing at North Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Locking-Blocks, of which the following is a specification.

My invention relates to locking blocks.

The objects of my invention are to pro.- vide a device of the class described that is portable, compact, eflicient in operation and inexpensive to manufacture, one that may be used in connection with any wheeled ve hicle, automobile, aeroplane and the like and one which when not in use may be carried on the vehicle, automobile, &c., or in a tool box thereon. v

With these and other objects in View my improvements in device consists in the new and novel con' struction, combinatioirand arrangement of parts hereinafter described and elauned and illustrated in the accompanying drawings,

whcrein: v

Figure 1 is a perspective view of the device in operative position on the tread of an automobile tire; i Fig. 2 is a side View of the device folded when not in use, and

F'g. 3 is a transverse sectional view taken on the line 33 of Fig. 2.

Like parts are referred to by like reference characters throughout the drawings.

Rcferrin to the drawings in detail the reference 0 aractcr (1 denotes the base of the locking bloclc as an entirety, the same being cast in one piece and preferablybf cast iron. A ractical working block measuring about 6% over all, 4

Said block' a comprises the transversely extending parallel arms 6 constructed in the form of a yoke, connected at their extremities by the cross arm Z'inte ral therewith.

Said parallel arms I) at t eir opposite ex tremities are brought closer-together to form the head of said yoke, as particularly illustrated in Fig. 1. I

The space between the parallel arms 6 at the contacting ends is of su'lilcient width to accommodate the tread of the wheel to be blocked, illustrated in the drawings as an automobile wheel and the cross arm "Y is cupped or beveled to efiectually hold said wheel therein and to preclude said wheel j from aiding thereover.

Patented Sept. so, 1919. I

An arm a is pivotally secured between the parallel arms I) as indicated at d; and terminates in the gripper or semicircular member 9 adapted to engage the tread of the said wheel 7'. An opening 7 is provided in said arm a for the passing therethrough' of a chain. it. This cham h is generally used to lock the wheel to encircles the tread '01? the wheel 7' beingsecured in place by means of the look a".

The said arm 0 is provided with the over: lappingportion is as illustrated and has the projecting portion 6 extending below the base of the parallel arms 6 when said arm 0 is in its extended position.-

In operation: The device is placed in orevent theft and it sition, the tread of the wheel to be bloc ed contacting against the cuppcd'cross arm 3 and the arms I; contacting against the sides .of said tread. The arm a is then elevated and also brought into contact with said tread. As said armc is elevated the projection e will enga e the earth or other substance upon whic the block is resting, providing a firm support for the block.

The many advantages of this device will be obvious. When in. position the wheel that it is blocking may be turned at an angle, as the block will follow or turn wit the wheel. In case of fire the locking block can be picked up with'the hand from its, blocking position without the necessity of unlocking block as it will carry with each rotation of the wheel without interference therewith. When jacking up an" automobile to chan e a tire on a rade, or on the level the device is very use ul in preventing the automobile from running ofi the jack. "It is cran ing a Ford car it has a tendency to.

move forward when the motor starts. The

present device will prevent this movement it i placed under the front wheel; Serious accidents have resulted from this cause in many instances--also damage has been caused when the car lurches forward in a the automobile issary to hold the plane down. The present device answers this purpose.

When not in use the device can be folded and can be carried with but slight inconvenience as it occupies but a small space.

Having thus described my invention What I claim as new and desire to secure by Let: ters Patent is:

1. A. device of the class described, comprising a yoke, a cross arm, cupped to engage the tread of a Wheel, connecting the arms thereof, and an arm pivotally secured in the head of said yoke terminating in a member gadapted to engage the tread of said wheel amaze at a point in advance of the arms of said yoke, said arm at its pivoted end having a projection adapted to engage the surface on which the device rests.

2. A device of the class described, cast in one piece, comprising a yoke, a cross arm,

cupped to engage the tread of a Wheel, connecting the arms thereof, and an arm pivotally secured in the head of said yoke terminating in a member adapted to engage the tread of said wheel at a point in advance of the arms of said yoke, said arm at its pivoted end having a projection adapted to engage the surface on which the device rests and means for locking the device in operative position.

In testimon whereof I aflix my signature.

- ALTER W. SHORDAY. 

